ASoC: au1x: Use managed buffer allocation

Clean up the drivers with the new managed buffer allocation API.
The superfluous snd_pcm_lib_malloc_pages() and
snd_pcm_lib_free_pages() calls are dropped.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210142614.19405-3-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/au1x/dbdma2.c

@@ -197,10 +197,6 @@ static int au1xpsc_pcm_hw_params(struct snd_soc_component *component,
 	struct au1xpsc_audio_dmadata *pcd;
 	int stype, ret;
 
-	ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
-	if (ret < 0)
-		goto out;
-
 	stype = substream->stream;
 	pcd = to_dmadata(substream, component);
 
@@ -232,13 +228,6 @@ out:
 	return ret;
 }
 
-static int au1xpsc_pcm_hw_free(struct snd_soc_component *component,
-			       struct snd_pcm_substream *substream)
-{
-	snd_pcm_lib_free_pages(substream);
-	return 0;
-}
-
 static int au1xpsc_pcm_prepare(struct snd_soc_component *component,
 			       struct snd_pcm_substream *substream)
 {
@@ -315,7 +304,7 @@ static int au1xpsc_pcm_new(struct snd_soc_component *component,
 	struct snd_card *card = rtd->card->snd_card;
 	struct snd_pcm *pcm = rtd->pcm;
 
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
 		card->dev, AU1XPSC_BUFFER_MIN_BYTES, (4096 * 1024) - 1);
 
 	return 0;
@@ -327,7 +316,6 @@ static struct snd_soc_component_driver au1xpsc_soc_component = {
 	.open		= au1xpsc_pcm_open,
 	.close		= au1xpsc_pcm_close,
 	.hw_params	= au1xpsc_pcm_hw_params,
-	.hw_free	= au1xpsc_pcm_hw_free,
 	.prepare	= au1xpsc_pcm_prepare,
 	.trigger	= au1xpsc_pcm_trigger,
 	.pointer	= au1xpsc_pcm_pointer,

sound/soc/au1x/dma.c

@@ -231,19 +231,10 @@ static int alchemy_pcm_hw_params(struct snd_soc_component *component,
 				 struct snd_pcm_hw_params *hw_params)
 {
 	struct audio_stream *stream = ss_to_as(substream, component);
-	int err;
 
-	err = snd_pcm_lib_malloc_pages(substream,
-				       params_buffer_bytes(hw_params));
-	if (err < 0)
-		return err;
-	err = au1000_setup_dma_link(stream,
-				    params_period_bytes(hw_params),
-				    params_periods(hw_params));
-	if (err)
-		snd_pcm_lib_free_pages(substream);
-
-	return err;
+	return au1000_setup_dma_link(stream,
+				     params_period_bytes(hw_params),
+				     params_periods(hw_params));
 }
 
 static int alchemy_pcm_hw_free(struct snd_soc_component *component,
@@ -251,7 +242,7 @@ static int alchemy_pcm_hw_free(struct snd_soc_component *component,
 {
 	struct audio_stream *stream = ss_to_as(substream, component);
 	au1000_release_dma_link(stream);
-	return snd_pcm_lib_free_pages(substream);
+	return 0;
 }
 
 static int alchemy_pcm_trigger(struct snd_soc_component *component,
@@ -292,8 +283,8 @@ static int alchemy_pcm_new(struct snd_soc_component *component,
 {
 	struct snd_pcm *pcm = rtd->pcm;
 
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-					      NULL, 65536, (4096 * 1024) - 1);
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+				       NULL, 65536, (4096 * 1024) - 1);
 
 	return 0;
 }